It was said that the police had done------best to find the -

问题描述:

It was said that the police had done______best to find the _____prisoner.
A.his escaped B.their escaped C.its escaping D.their escaping
但是D为什么错.B又对在哪了?
1个回答 分类:英语 2014-09-21

问题解答:

我来补答
第一空填their,因为police是集合名词,第二空escaped为过去分词作定语,escape 为不及物动词,不及物动词的过去分词只表示完成,而不表示被动.这里指已经逃跑的犯人.
 
 
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